Definition: You are given a math word problem and you are supposed to make use of mathematical concepts like probability, combinatorics, linear equations, sequences/series, or simple operators like addition, subtraction, division, or multiplication to answer the given question. Choose the best option from the 5 given options and report that option.
Input: Question: Ram professes to sell his goods at the cost price but he made use of 970 grms instead of a kg, what is the gain percent?

 Option A: 11 1/7%

 Option B: 3.09%

 Option C: 11 1/9%

 Option D: 71 1/9%

 Option E: 11 1/2%

Option B